EP0650319A1 - An electronic parts data recorder and a mounter employing the recorder - Google Patents
An electronic parts data recorder and a mounter employing the recorder Download PDFInfo
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- EP0650319A1 EP0650319A1 EP94402341A EP94402341A EP0650319A1 EP 0650319 A1 EP0650319 A1 EP 0650319A1 EP 94402341 A EP94402341 A EP 94402341A EP 94402341 A EP94402341 A EP 94402341A EP 0650319 A1 EP0650319 A1 EP 0650319A1
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- parts
- electronic parts
- data
- picture information
- parts data
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0812—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement
Definitions
- This invention relates to a parts data recorder and a mounter employing the mounter, more particularly, to an art for mounting packaged IC, LSI and the like, on the printed circuit board.
- Electronic parts such as IC comprises: a main portion, that is to say, a molded portion, which is a rectangular shape in plan view; and a plurality of leads, each of which is protruding from the outer circumference of the molded portion.
- the electronic parts e, g, one IC chip
- the electronic parts is carried from a parts stage, on which the plural electronic parts is put to a print stage on which the printed circuit boards are held by using a chip mounter.
- the chip mounter has a mount head which is provided with a vacuum bit which vacuums the electronic parts; this mount head is provided with a centering apparatus which mechanically positions the electronic parts at the predetermined reference point and the predetermined posture.
- the centering apparatus has a positioning member which touches the electronic parts. This positioning member makes the leads of the electronic parts bend.
- the present inventor examined an art, in which only, the vacuuming is done without the centering, the position and the posture of the electronic parts which is held by the chip mounter are detected by using a camera, the electronic parts is mounted on the printed circuit board, and the drift of the mount head with respect to the reference position is adjusted when mounting the electronic parts on the printed circuit board.
- the operator has to key in the data of the electronic parts which may be mounted so as to correspond to all of the users; however, this is impossible because there many types of electronic parts. Further, even in the case in which the users of the mounter of the chip (C) can be assigned, the operator has to alter the data of the parts at every alteration of the electronic parts, so that the operability is poor and the burden on the operator is large.
- the present invention provides a parts data recorder comprising: a recording means, which records a picture of an electronic parts mounted on a mounted part; a picture information memory, which stores the picture information of one frame of the electronic parts; a parts data computing means, which reads the picture information of the specific region from the picture information of one frame, and computes the parts data of the electronic parts; and a parts data memory, which stores the parts data computed by the parts data computing means.
- a mounter comprising: a recording means, which records picture information of an electronic parts mounted on a mounted part; a picture information memory, which stores the picture information of one frame of the electronic parts; a parts data computing means, which reads the picture information of the specific region from the picture information of one frame, and computes the parts data of the electronic parts; a parts data memory, which stores the parts data computed by the parts data computing means; a mounting means, which mounts the electronic parts put on a stage on the mounted part put on the mounting stage; a drift quantity computing means, which computes the quantity of the drift between a position of the electronic parts which is in a state to be held by the mounting means and a reference point of the mounting means in accordance with the parts data; and an adjustment value computing means, which computes an adjustment value of the electronic parts with respect to the reference points in accordance with the quantity of the drift.
- the picture information of one frame of the electronic parts, which is recorded by the recording means such as a video camera, a camera is stored in the memory, and the stored parts data is computed from the picture information.
- the mounter having the above construction, it is possible to detect what kind of electronic parts is being mounted, and whether the electronic parts is in a state to be held at the predetermined position with respect to the mounter or be not done, by comparison between the stored parts data and the picture information data of the electronic parts in the conveyance path. Further, it is possible to conduct accurate positioning with respect to the mounted part on which the electronic parts should be mounted, in conformity with the detected drift.
- Fig. 1 is a schematic view which shows the mounting steps of chip (C) which are carried by a mounter 2 from a parts stage 3 on which the chip (C) is put, to a mounting stage 3.
- the chip (C) is formed by molding an IC chip in a package of resin, ceramic or the like.
- the chip (C) comprises the molded portion (Ca) and the leads (Cb) protruding from the outer circumference of the molded portion (Ca).
- the chip (C) is mounted on a printed circuit board 4 by the mounter 2.
- the mounter 2 has a mount head 2a.
- the mount head 2a is provided with a vacuum bit 5, and an opening for the vacuum adsorption is formed at the lower edge face of the vacuum bit 5.
- the vacuum bit 5 adsorbs, as shown in Fig. 1, the chip (C) on the lower face thereof.
- the mounter 2 moves between the parts stage 1 and the mounting stage 3 toward the (X) axis direction, and toward the (Y) axis direction, which is perpendicular to the (X) axis in horizontal plan. Further, the mount head 2a moves in the up and down direction, that is, in the (Z) axis direction; and rotates in the ( ⁇ ) direction. Thus, the chip (C) is moved to the locus shown in Fig. 1, and is mounted on the printed circuit board 4.
- a video camera (recording means) 7 for recording the chip (C) is arranged facing the mounter 2.
- the video camera 7 records the chip (C) in the state in which they are kept by the mount head 2a.
- the mounter 2 stops the mount of the chip (C) for the predetermined time.
- the mounter 2 is provided with lights 8 for transmitting illumination to the video camera 7.
- Fig. 4 is a block diagram which shows the control circuit of the mounter 2 of the chip (C).
- the picture information from the video camera 7 is signal processed into two dimensional picture data of one frame by a picture processing CPU 11 in a picture processing device 10.
- Two dimensional picture data of one frame is stored in a picture memory 12.
- the picture processing CPU 11 is connected to a main CPU 13, and to a CRT 14 for picture processing.
- the control signal is transmitted from the main CPU 13, through a motor driver 16, to a mount head driver 15 for making the mount head 2a move, described as above, in the (Z) axis direction and the ( ⁇ ) direction.
- the control signal is transmitted from the main CPU 13, through a motor driver 18, to a mounter driver 17 for making the mount head 2a move.
- Steps S2 ⁇ S4 are described hereinafter.
- the parts data of the chip (C) which are mounted on the printed circuit board 4 is thereby obtained.
- measurements which are indicated by the letters A ⁇ M in Fig. 2 and Fig. 3 are the parts data to be read.
- the width (A) and the length (B) of the molded portion (Ca), the width (D) and the length (E) of the chip (C), the lead connecting face length (F), the lead width (G), the lead interval (I), the length (J), the width (K), the number of leads in width direction (L) and the number of leads in length direction (M) of the lead: are computed by the picture processing.
- Fig. 5 is a main flow chart which shows Steps for storing of the parts data.
- Step S1 the approximate outer circumference position and the temporary center position of the chip (C) is computed.
- Step S1 as shown in Fig. 6, from the plane picture information (H) of one frame which is stored in the picture memory 12 the window W 0h is read, the length of which is close to the width of the plane picture information (H) and the edge position S h1 ,S h2 of the outer circumference in the width direction is computed in conformity with the detecting of the edge of the plane picture information (H) in the picture memory 12.
- the window W v0 is read, the length of which is close to the length of the plane picture information H; the edge position S v1 ,S v2 of the outer circumference in the width direction is computed in conformity with the detecting of the edge of the plane picture information H.
- the approximate outer circumference of the electronic parts is measured, so that the approximate width (D0) and the approximate length (E0) are computed in accordance with the positions of the edge of the outer circumference.
- the temporary values of the center position (Oa) of the chip (C) are computed in accordance with the temporary values.
- Step S2 the positions of the lead edges and the position of the molded portion are detected.
- the short window W 1h corresponding to the position at which it is expected that the molded portion (Ca) might be present, in accordance with the approximate outer circumference position and the temporary center position (Oa) which are computed in Step S1, is loaded from the picture memory 12, so that the position S h3 ,S h5 of the side end face of the molded portion (Ca) and the top positions S h4 ,S h6 of the lead (Cb) are detected in conformity with the edge detection of the window W 1h .
- the short window W 1v is read, and the position S v3 ,S v5 of the length end face of the molded portion (Ca) and the top position S v4 ,S v6 of the lead (Cb) are detected.
- the width (A),(D) and the length (B),(E) of the molded portion (Ca) of the chip (C) as shown in Fig. 2 and Fig. 3 are computed.
- Step S3 is executed, and as shown in Fig. 8, the picture information corresponding to the lead (Cb) is loaded from the parts data which is computed in Step S2, so that the windows W 2v ,W 2h for the lead (Cb) are extracted.
- the lead connecting face length (F), the lead width (G), the lead interval (I), the length (J), the width (K), the number of leads (L) in the length direction and the number of leads (M) in the width direction, as shown in Fig. 3, are computed in accordance with positions of the lead edge in the windows W 2v ,W 2h .
- Fig. 9(a) ⁇ (d) are schematic views which show the detection steps for the edge of the electronic parts.
- the data in the W 2h is converted to one dimensional data (a projection process), and the edge positions are detected therefrom.
- the light and shade data as shown in Fig. 9(b) is obtained.
- the peak values (P) as shown in Fig. 9(c) are computed by a filtering process, and the edge as shown in Fig. 9(d) is computed from the peak values (P). Steps for computing the edge are adopted in not only the lead (Cb), but also in the molded portion (Ca).
- a projection process is conducted to compute the average value of the edge positions.
- the projection process is done by shifting the position of the window W 2h toward the arrow, as shown in Fig. 9(a).
- the parts data obtained in this manner is processed in the memorable data in Step S4. Further, in Step S5, the parts data is judged as to whether the electronic parts is correct or not by comparison between the present parts data and the parts data which is already stored in the picture memory 12 as described above.
- Step S6 In the case in which the present parts data is inaccurate, that is, the electronic parts is broken, for example, the lead is missing, an error is indicated on a CRT 14 in Step S6.
- the present parts data is indicated on CRT 14 and the present parts data is stored in Step S7.
- the parts data is stored in an other memory medium such as a floppy disk and the like as well, not in the picture memory 12.
- an initial angle ( ⁇ i ) can be required by a following method.
- New parts data is not extracted after the parts data was extracted in the first place.
- the credibility of the first parts data is low.
- the credibility of the parts data is confirmed whether each sample data such as the lead interval (I) is a normal distribution or not.
- the sample data is in the out of a normal distribution, the credibility of which is confirmed to be low, and thus the sample data is dealt as an invalid data.
- the chip (c) is defective when extracting the parts data therefrom, it is possible to judge it to be defective.
- the defective such as a broken lead chip, a bent lead chip is judged to be defective.
- the information data which means " this IC is a missing lead IC” is imputed by a manual operation in order that an other broken lead IC in a normal state ( a "missing lead IC” and the like ) is recognized as a normal part.
- the missing lead IC is judged to be a normal parts.
- the picture information of the whole of the chip (C) is recorded by the video camera 7, and is read.
- the picture of the chip (C) do not the lens of the video camera 7. In this case, it is also possible to divide the picture in to two or four pictures.
- Fig. 10(a) ⁇ (c) are schematic views which show Steps for two divided disposition.
- Fig. 10(a) shows the measurement steps for the approximate outer circumference of the chip (C) by making the long wind.
- Fig. 10(b) is a view which shows the measurement steps for the outer circumference of the chip (C) by making the short window, the measurement of the lead (Cb) is done by making the window for the lead as shown in Fig. 10(c).
- the other side is disposed as well.
- Fig. 11(a) ⁇ (c) are schematic views which show Steps for a four-division disposition.
- the parts data is computed by making the window which is the same as the window in case described above.
- All of the kinds of parts data of the chip (C) which should be mounted using the mounter 2 as shown in Fig. 1 are stored in the memory.
- the kind of chip (C) held by the mounter 2 is determined. Further, the chip (C) are in a state to be held by the mount head 2a, then the drift of the parts with respect to the mount head 2a is detected. The drift of the chip (C) with respect to the mount head 2a is adjusted in accordance with these results when the chip (C) are mounted on the printed circuit board 4.
- Fig. 7 ⁇ Fig. 9 shows that the chip (C) are held in a state in which the center (Oa) thereof has drifted with respect to the center (O) of the vacuum bit 5 by ( ⁇ X) in the (X) axis direction and ( ⁇ Y) in the (Y) axis direction.
- Fig. 1 shows the case in which the lights 8 is provided at the mounter 2 side, so that transmitted illumination is carried out.
- a leading light cylinder having the light therein is also provided between the video camera 7 and the mounter 2. In this case, it is possible to record a picture of the electronic parts such as LCC which can be recorded accurately by the reflected illumination.
- the present invention can be adopted to not only GFT, SOP, QFP, MISSING LEAD IC, LCC and the like, but also to many kinds of electronic parts.
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
Description
- This invention relates to a parts data recorder and a mounter employing the mounter, more particularly, to an art for mounting packaged IC, LSI and the like, on the printed circuit board.
- Electronic parts such as IC comprises: a main portion, that is to say, a molded portion, which is a rectangular shape in plan view; and a plurality of leads, each of which is protruding from the outer circumference of the molded portion. When mounting such electronic parts on the printed circuit board, the electronic parts ( e, g, one IC chip ) is carried from a parts stage, on which the plural electronic parts is put to a print stage on which the printed circuit boards are held by using a chip mounter.
- In general, the chip mounter has a mount head which is provided with a vacuum bit which vacuums the electronic parts; this mount head is provided with a centering apparatus which mechanically positions the electronic parts at the predetermined reference point and the predetermined posture.
- However, the centering apparatus has a positioning member which touches the electronic parts. This positioning member makes the leads of the electronic parts bend.
- The present inventor examined an art, in which only, the vacuuming is done without the centering, the position and the posture of the electronic parts which is held by the chip mounter are detected by using a camera, the electronic parts is mounted on the printed circuit board, and the drift of the mount head with respect to the reference position is adjusted when mounting the electronic parts on the printed circuit board.
- However, for the computing of the shape and the measurement by processing the picture information which is extracted by using the video camera, it is necessary to prepare the measurement of all of the electronic parts which is mounted and to input the data of the measurement and the like using a keyboard, or to prepare a library thereof.
- Accordingly, in the case in which the users of the mounter of the electronic parts is not assigned; the operator has to key in the data of the electronic parts which may be mounted so as to correspond to all of the users; however, this is impossible because there many types of electronic parts. Further, even in the case in which the users of the mounter of the chip (C) can be assigned, the operator has to alter the data of the parts at every alteration of the electronic parts, so that the operability is poor and the burden on the operator is large.
- It is an object of the present invention to provide a parts data recorder which can read the data of parts the stage by using a video camera.
- It is an other object of the present invention to provide a mounter which can automatically detect the distinction of the kind of electronic parts and the posture thereof with respect to the mounter, when electronic parts is being mounted on the printed circuit board, by getting the picture information of the shape, the measurement and the like of the electronic parts in the state to be held by a mounter, and by measuring the posture of the electronic parts with respect to the mounter.
- The object and the novel characterizing part of the present invention may be made clear by the description of the specification and the figures.
- The outline of the representative characteristics of the present invention disclosed in the present application is as described below.
- So as to satisfy this object, the present invention provides a parts data recorder comprising: a recording means, which records a picture of an electronic parts mounted on a mounted part; a picture information memory, which stores the picture information of one frame of the electronic parts; a parts data computing means, which reads the picture information of the specific region from the picture information of one frame, and computes the parts data of the electronic parts; and a parts data memory, which stores the parts data computed by the parts data computing means.
- Further, a mounter comprising: a recording means, which records picture information of an electronic parts mounted on a mounted part; a picture information memory, which stores the picture information of one frame of the electronic parts; a parts data computing means, which reads the picture information of the specific region from the picture information of one frame, and computes the parts data of the electronic parts; a parts data memory, which stores the parts data computed by the parts data computing means; a mounting means, which mounts the electronic parts put on a stage on the mounted part put on the mounting stage; a drift quantity computing means, which computes the quantity of the drift between a position of the electronic parts which is in a state to be held by the mounting means and a reference point of the mounting means in accordance with the parts data; and an adjustment value computing means, which computes an adjustment value of the electronic parts with respect to the reference points in accordance with the quantity of the drift.
- According to the parts data recorder in accordance with the present invention, the picture information of one frame of the electronic parts, which is recorded by the recording means such as a video camera, a camera is stored in the memory, and the stored parts data is computed from the picture information. Thus, the key operating of the parts data by the operator is unnecessary, and the operation of the extraction of the parts data is greatly improved.
- In the mounter having the above construction, it is possible to detect what kind of electronic parts is being mounted, and whether the electronic parts is in a state to be held at the predetermined position with respect to the mounter or be not done, by comparison between the stored parts data and the picture information data of the electronic parts in the conveyance path. Further, it is possible to conduct accurate positioning with respect to the mounted part on which the electronic parts should be mounted, in conformity with the detected drift.
- (1) Since the parts data of the chip can be extracted by processing the picture information which is recorded by the recording means; extracting the parts data of the electronic parts by the operator in advance is unnecessary, and it is possible to lessen the burden on the operator.
- (2) Since the parts data is extracted from the electronic parts which is actually mounted, it is possible to avoid error between the parts data and the measurement value of the electronic parts.
- (3)Since the mounter for mounting the electronic parts on the printed circuit board and the like has the function of a memory storing the parts data; it is possible to judge whether the electronic parts is correct or not by comparison between the present data of the electronic parts which is mounted and the parts data which is already stored.
- (4) It is possible to judge whether the hold of the electronic parts by the mounter is correct or not and how large the drift of the electronic parts is with respect to the predetermined position, by making use of the parts data. It is possible to mount the electronic parts at the predetermined position, adjusting the drift when mounting the parts thereto.
- In the accompanying drawings:
- Fig. 1 is a schematic view which shows the mounter of the electronic parts in accordance with the embodiment of the present invention;
- Fig. 2(a) is a front view which shows an example of the electronic parts;
- Fig. 2(b) is a left side view thereof;
- Fig. 2(c) is a bottom view thereof;
- Fig. 3 is a table which shows the parts data;
- Fig. 4 is a block diagram which shows the control circuit of the mounter of the electronic parts;
- Fig. 5 is a main flow chart which shows Steps for storing of the parts data;
- Fig. 6 is a schematic view which shows the measurement steps for the approximate outer circumference of the electronic parts;
- Fig. 7 is a schematic view which shows the measurement steps for the outer circumference portion of the electronic parts;
- Fig. 8 is a schematic view which shows the measurement steps for the lead of the electronic parts;
- Figs. 9(a), 9(b), 9(c) and (d) are schematic views which show the detection steps for the edge of the electronic parts;
- Figs. 10(a), 10(b) and 10(c) are schematic views which show Steps for two divided dispositions;
- Figs. 11(a), 11(b) and 11(c) are schematic views which show Steps for four divided dispositions;
- Fig. 12 is a schematic view which shows the light in accordance with the other embodiment of the present invention; and
- Figs. 13(a) and 13(b) are descriptive views of enquiring a method of (ϑi), Fig. 13(a) is a enlarged partially view of a lead, Fig. 13(b) is a schematic view of a chip on X-Y coordinates.
- Hereinafter, an embodiment of the present invention will be described with reference to figures.
- Fig. 1 is a schematic view which shows the mounting steps of chip (C) which are carried by a
mounter 2 from aparts stage 3 on which the chip (C) is put, to amounting stage 3. The chip (C) is formed by molding an IC chip in a package of resin, ceramic or the like. For example, as shown in Fig. 2, the chip (C) comprises the molded portion (Ca) and the leads (Cb) protruding from the outer circumference of the molded portion (Ca). The chip (C) is mounted on a printedcircuit board 4 by themounter 2. - The
mounter 2 has amount head 2a. Themount head 2a is provided with avacuum bit 5, and an opening for the vacuum adsorption is formed at the lower edge face of thevacuum bit 5. Thevacuum bit 5 adsorbs, as shown in Fig. 1, the chip (C) on the lower face thereof. - The
mounter 2 moves between the parts stage 1 and themounting stage 3 toward the (X) axis direction, and toward the (Y) axis direction, which is perpendicular to the (X) axis in horizontal plan. Further, themount head 2a moves in the up and down direction, that is, in the (Z) axis direction; and rotates in the (ϑ) direction. Thus, the chip (C) is moved to the locus shown in Fig. 1, and is mounted on the printedcircuit board 4. - A video camera (recording means) 7 for recording the chip (C) is arranged facing the
mounter 2. Thevideo camera 7 records the chip (C) in the state in which they are kept by themount head 2a. When recording, themounter 2 stops the mount of the chip (C) for the predetermined time. Themounter 2 is provided withlights 8 for transmitting illumination to thevideo camera 7. - Fig. 4 is a block diagram which shows the control circuit of the
mounter 2 of the chip (C). As shown in Fig. 4, the picture information from thevideo camera 7 is signal processed into two dimensional picture data of one frame by apicture processing CPU 11 in apicture processing device 10. Two dimensional picture data of one frame is stored in apicture memory 12. Thepicture processing CPU 11 is connected to amain CPU 13, and to aCRT 14 for picture processing. - The control signal is transmitted from the
main CPU 13, through amotor driver 16, to amount head driver 15 for making themount head 2a move, described as above, in the (Z) axis direction and the (ϑ) direction. The control signal is transmitted from themain CPU 13, through amotor driver 18, to amounter driver 17 for making themount head 2a move. - The picture information which is recorded by the
video camera 7 as shown in Fig. 1 is stored in thepicture memory 12, this picture information is processed by Steps S2∼S4. Steps S2∼S4 are described hereinafter. The parts data of the chip (C) which are mounted on the printedcircuit board 4 is thereby obtained. For example, in the case of the chip (C) shown in Fig. 2, measurements which are indicated by the letters A∼M in Fig. 2 and Fig. 3 are the parts data to be read. - Making the relationship between the sign and the parts data into a table, as shown in Fig. 3, the width (A) and the length (B) of the molded portion (Ca), the width (D) and the length (E) of the chip (C), the lead connecting face length (F), the lead width (G), the lead interval (I), the length (J), the width (K), the number of leads in width direction (L) and the number of leads in length direction (M) of the lead: are computed by the picture processing.
- Fig. 5 is a main flow chart which shows Steps for storing of the parts data. The first, in Step S1, the approximate outer circumference position and the temporary center position of the chip (C) is computed. In Step S1, as shown in Fig. 6, from the plane picture information (H) of one frame which is stored in the
picture memory 12 the window W0h is read, the length of which is close to the width of the plane picture information (H) and the edge position Sh1,Sh2 of the outer circumference in the width direction is computed in conformity with the detecting of the edge of the plane picture information (H) in thepicture memory 12. Likewise, the window Wv0 is read, the length of which is close to the length of the plane picture information H; the edge position Sv1,Sv2 of the outer circumference in the width direction is computed in conformity with the detecting of the edge of the plane picture information H. - In this way, the approximate outer circumference of the electronic parts is measured, so that the approximate width (D₀) and the approximate length (E₀) are computed in accordance with the positions of the edge of the outer circumference. The temporary values of the center position (Oa) of the chip (C) are computed in accordance with the temporary values.
- In Step S2, the positions of the lead edges and the position of the molded portion are detected. At this time, as shown in Fig. 7, the short window W1h, corresponding to the position at which it is expected that the molded portion (Ca) might be present, in accordance with the approximate outer circumference position and the temporary center position (Oa) which are computed in Step S1, is loaded from the
picture memory 12, so that the position Sh3,Sh5 of the side end face of the molded portion (Ca) and the top positions Sh4,Sh6 of the lead (Cb) are detected in conformity with the edge detection of the window W1h. In the same way, the short window W1v is read, and the position Sv3,Sv5 of the length end face of the molded portion (Ca) and the top position Sv4,Sv6 of the lead (Cb) are detected. - In accordance with the above values, the width (A),(D) and the length (B),(E) of the molded portion (Ca) of the chip (C) as shown in Fig. 2 and Fig. 3 are computed.
- Next, Step S3 is executed, and as shown in Fig. 8, the picture information corresponding to the lead (Cb) is loaded from the parts data which is computed in Step S2, so that the windows W2v,W2h for the lead (Cb) are extracted. The lead connecting face length (F), the lead width (G), the lead interval (I), the length (J), the width (K), the number of leads (L) in the length direction and the number of leads (M) in the width direction, as shown in Fig. 3, are computed in accordance with positions of the lead edge in the windows W2v,W2h.
- Fig. 9(a)∼(d) are schematic views which show the detection steps for the edge of the electronic parts. As shown in Fig. 9(a), the data in the W2h is converted to one dimensional data (a projection process), and the edge positions are detected therefrom. The light and shade data as shown in Fig. 9(b) is obtained. The peak values (P) as shown in Fig. 9(c) are computed by a filtering process, and the edge as shown in Fig. 9(d) is computed from the peak values (P). Steps for computing the edge are adopted in not only the lead (Cb), but also in the molded portion (Ca).
- A projection process is conducted to compute the average value of the edge positions. The projection process is done by shifting the position of the window W2h toward the arrow, as shown in Fig. 9(a).
- The parts data obtained in this manner is processed in the memorable data in Step S4. Further, in Step S5, the parts data is judged as to whether the electronic parts is correct or not by comparison between the present parts data and the parts data which is already stored in the
picture memory 12 as described above. - In the case in which the present parts data is inaccurate, that is, the electronic parts is broken, for example, the lead is missing, an error is indicated on a
CRT 14 in Step S6. In the case in which the present parts data is accurate, the present parts data is indicated onCRT 14 and the present parts data is stored in Step S7. The parts data is stored in an other memory medium such as a floppy disk and the like as well, not in thepicture memory 12. - In the case in which the chip (C) is rotated in horizontal plane, an initial angle (ϑi) can be required by a following method.
- Each lead top (ℓt) and lead center (ℓc) as shown in Fig. 13(a) are detected.
- Next, two lead centers (ℓc) corresponding to each other in approximate X axis direction and Y axis direction, which are connected to each other, each straight line.
- Next, Average of (A) is derived from Yn = AnX + Bn, and (ϑi) can be required from averaging (A):
average of (A) = 1/n (Σ An ). - Further, New parts data is not extracted after the parts data was extracted in the first place. However, the credibility of the first parts data is low. As a countermeasure of the low credibility, there is an averaging method by repeating the extraction of the parts data several times. In this case, the credibility of the parts data is confirmed whether each sample data such as the lead interval (I) is a normal distribution or not. When the sample data is in the out of a normal distribution, the credibility of which is confirmed to be low, and thus the sample data is dealt as an invalid data.
- Further, even in the case in which the chip (c) is defective when extracting the parts data therefrom, it is possible to judge it to be defective. The defective such as a broken lead chip, a bent lead chip is judged to be defective. In a special case, the information data which means " this IC is a missing lead IC" is imputed by a manual operation in order that an other broken lead IC in a normal state ( a "missing lead IC" and the like ) is recognized as a normal part. The missing lead IC is judged to be a normal parts.
- In the embodiment described as above, the picture information of the whole of the chip (C) is recorded by the
video camera 7, and is read. However, in the case in which the chip (C) is large, the picture of the chip (C) do not the lens of thevideo camera 7. In this case, it is also possible to divide the picture in to two or four pictures. - Fig. 10(a)∼(c) are schematic views which show Steps for two divided disposition. Fig. 10(a) shows the measurement steps for the approximate outer circumference of the chip (C) by making the long wind. Fig. 10(b) is a view which shows the measurement steps for the outer circumference of the chip (C) by making the short window, the measurement of the lead (Cb) is done by making the window for the lead as shown in Fig. 10(c). In the case of a two-division method, the other side is disposed as well.
- Fig. 11(a)∼(c) are schematic views which show Steps for a four-division disposition. The parts data is computed by making the window which is the same as the window in case described above.
- The decision whether to employ division, two divisions or a four division disposition is directed by the keying of the operator.
- All of the kinds of parts data of the chip (C) which should be mounted using the
mounter 2 as shown in Fig. 1 are stored in the memory. When the chip (C) is mounted on the printedcircuit board 4 by themount head 2a from the parts stage 1 to the mountingstage 3, the kind of chip (C) held by themounter 2 is determined. Further, the chip (C) are in a state to be held by themount head 2a, then the drift of the parts with respect to themount head 2a is detected. The drift of the chip (C) with respect to themount head 2a is adjusted in accordance with these results when the chip (C) are mounted on the printedcircuit board 4. - Fig. 7∼Fig. 9 shows that the chip (C) are held in a state in which the center (Oa) thereof has drifted with respect to the center (O) of the
vacuum bit 5 by (ΔX) in the (X) axis direction and (ΔY) in the (Y) axis direction. - In such a case in which the parts are held in a drifted state, in the process in which the chip (C) are carried by the
mount head 2a from the parts stage 1 to the mounting 3, the picture information of the chip (C) is recorded by the camera, and the drift is computed therefrom, so that it is possible to adjust the position of the chip (C) with respect to themount head 2a. - As shown in Fig. 6, when the center (Oa) of the chip (C) drifts with respect to the center (O) of the
vacuum bit 5, the quantity of the drift in the (X) axis direction is (ΔX) and the quantity of the drift in the (Y) axis direction is (ΔY), and each of the drift quantities (ΔX), (ΔY) is computed by themain CPU 13. Further, in the case in which the chip (C) are in a state of rotation from an accurate position, the rotating drift quantity (Δϑ) thereof is computed by themain CPU 13. The adjusting values are computed in accordance with the drift quantities, so that the adjustment of themount head 2a is done when the chip (C) are mounted on the printedcircuit board 4. - Fig. 1 shows the case in which the
lights 8 is provided at themounter 2 side, so that transmitted illumination is carried out. As shown in Fig. 12, a leading light cylinder having the light therein is also provided between thevideo camera 7 and themounter 2. In this case, it is possible to record a picture of the electronic parts such as LCC which can be recorded accurately by the reflected illumination. - Hereinbefore, the present invention was described concretely in accordance with the embodiment. The present invention is not limited into the embodiment, in so far as the essence of the invention is not deviated from, it goes without saying that the present invention can be modified.
- For example, the present invention can be adopted to not only GFT, SOP, QFP, MISSING LEAD IC, LCC and the like, but also to many kinds of electronic parts.
- Further, it is also possible to use a camera instead of a video camera.
Claims (5)
- A parts data recorder comprising:
a recording means, which records a picture of an electronic parts mounted on a mounted part;
a picture information memory, which stores the picture information of one frame of the electronic parts;
a parts data computing means, which reads the picture information of the specific region from the picture information of one frame, and computes the parts data of the electronic parts; and
a parts data memory, which stores the parts data computed by the parts data computing means. - A mounter comprising:
a recording means, which records picture information of an electronic parts mounted on a mounted part;
a picture information memory, which stores the picture information of one frame of the electronic parts;
a parts data computing means, which reads the picture information of the specific region from the picture information of one frame, and computes the parts data of the electronic parts;
a parts data memory, which stores the parts data computed by the parts data computing means;
a mounting means, which mounts the electronic parts put on a stage on the mounted part put on the mounting stage;
a drift quantity computing means, which computes the quantity of the drift between a position of the electronic parts which is in a state to be held by the mounting means and a reference point of the mounting means in accordance with the parts data; and
an adjustment value computing means, which computes an adjustment value of the electronic parts with respect to the reference points in accordance with the quantity of the drift. - The parts data recorder in claim 1 further comprising:
a judging means, which judges whether the electronic parts is correct or not by the comparison between the present data of the electronic parts which is being mounted and the parts data which is already stored in the parts data memory. - The mounter in claim 2 further comprising:
a judging means which judges whether the electronic parts is correct or not by the comparison between the present data of the electronic parts which is being mounted and the parts data which is already stored in the parts data memory. - The mounter in claim 2 wherein:
the mounting means puts the electronic parts in position, in which the mounted part dose not exist, when the electronic parts is judged to be not correct by the judging means.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP263529/93 | 1993-10-21 | ||
JP5263529A JP2941617B2 (en) | 1993-10-21 | 1993-10-21 | Electronic component component data recording device and electronic component transport and assembling device using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0650319A1 true EP0650319A1 (en) | 1995-04-26 |
EP0650319B1 EP0650319B1 (en) | 1997-08-13 |
Family
ID=17390807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94402341A Expired - Lifetime EP0650319B1 (en) | 1993-10-21 | 1994-10-18 | An electronic parts data recorder and a mounter employing the recorder |
Country Status (4)
Country | Link |
---|---|
US (1) | US5646681A (en) |
EP (1) | EP0650319B1 (en) |
JP (1) | JP2941617B2 (en) |
DE (1) | DE69404943T2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1997039613A1 (en) * | 1996-04-18 | 1997-10-23 | Matsushita Electric Industrial Co., Ltd. | Mounting electronic component method and apparatus |
EP0970782A3 (en) * | 1998-07-10 | 2001-11-14 | SANYO ELECTRIC Co., Ltd. | Component suction site-teaching system and method |
US6584683B2 (en) | 1996-04-18 | 2003-07-01 | Matsushita Electric Industrial Co., Ltd. | Mounting electronic component method and apparatus |
US6954681B2 (en) | 2000-12-15 | 2005-10-11 | Cyberoptics Corporation | Board align image acquisition device with improved interface |
US7190393B2 (en) | 2000-12-15 | 2007-03-13 | Cyberoptics Corporation | Camera with improved illuminator |
CN1322800C (en) * | 2003-05-30 | 2007-06-20 | 株式会社查纳位资讯情报 | Substrate information creating method and substrate information creating device |
CN115843174A (en) * | 2023-02-17 | 2023-03-24 | 合肥安迅精密技术有限公司 | Method, system and medium for controlling button enabling of chip mounter based on event driving |
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JP3418497B2 (en) * | 1996-04-16 | 2003-06-23 | 松下電器産業株式会社 | Component recognition method |
JP4014270B2 (en) * | 1998-01-06 | 2007-11-28 | 富士機械製造株式会社 | Substrate support pin arrangement method, arrangement inspection method and apparatus |
US6538750B1 (en) * | 1998-05-22 | 2003-03-25 | Cyberoptics Corporation | Rotary sensor system with a single detector |
JP3678007B2 (en) * | 1998-07-10 | 2005-08-03 | 松下電器産業株式会社 | Electronic component recognition apparatus and electronic component recognition method in electronic component mounting apparatus |
SE516239C2 (en) | 2000-04-28 | 2001-12-03 | Mydata Automation Ab | Method and apparatus for determining nominal data for electronic circuits, by taking a digital image and comparing it with stored nominal data. |
MY127433A (en) * | 2001-05-29 | 2006-12-29 | Integrated Device Tech | Die bonding apparatus with automatic die and lead frame image matching system. |
JP4417779B2 (en) * | 2004-05-31 | 2010-02-17 | 株式会社日立ハイテクインスツルメンツ | Electronic component mounting apparatus and electronic component mounting method |
JP2007150267A (en) * | 2005-10-31 | 2007-06-14 | Juki Corp | Correction method for head position of component mounting device, and dummy nozzle |
JP4596324B2 (en) * | 2005-11-16 | 2010-12-08 | 富士機械製造株式会社 | Electronic component lead width detection position determination method, lead width detection method, and apparatus thereof |
JP4237766B2 (en) * | 2006-02-10 | 2009-03-11 | パナソニック株式会社 | Component mounter control method, component mounter and program |
JP2010234456A (en) * | 2009-03-30 | 2010-10-21 | Toyota Motor Corp | Assembling device and assembling method |
JP2012006088A (en) * | 2010-06-22 | 2012-01-12 | Hitachi High-Technologies Corp | Work edge detection mechanism, and work transferring mechanism |
JP5713634B2 (en) * | 2010-11-10 | 2015-05-07 | 矢崎総業株式会社 | Component position measurement method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2169422A (en) * | 1984-12-26 | 1986-07-09 | Tdk Corp | An electronic component mounting system |
EP0341944A2 (en) * | 1988-05-10 | 1989-11-15 | Gec Plessey Telecommunications Limited | Improvements in or relating to methods of and apparatus for registration |
US5212881A (en) * | 1990-09-20 | 1993-05-25 | Tokico Ltd. | Electronic component mounting apparatus |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4628464A (en) * | 1983-10-07 | 1986-12-09 | Westinghouse Electric Corp. | Robotic system for mounting electrical components |
JP2776860B2 (en) * | 1989-01-11 | 1998-07-16 | 株式会社日立製作所 | Electronic component mounting device and mounting method |
JP2668034B2 (en) * | 1989-02-06 | 1997-10-27 | 株式会社日立製作所 | Construction equipment |
JPH0724360B2 (en) * | 1990-02-20 | 1995-03-15 | 松下電工株式会社 | Position correction method for parts |
US5137362A (en) * | 1990-03-26 | 1992-08-11 | Motorola, Inc. | Automatic package inspection method |
US5113565A (en) * | 1990-07-06 | 1992-05-19 | International Business Machines Corp. | Apparatus and method for inspection and alignment of semiconductor chips and conductive lead frames |
JP3452201B2 (en) * | 1991-05-07 | 2003-09-29 | 芝浦メカトロニクス株式会社 | Component mounting equipment |
US5459794A (en) * | 1993-07-15 | 1995-10-17 | Ninomiya; Takanori | Method and apparatus for measuring the size of a circuit or wiring pattern formed on a hybrid integrated circuit chip and a wiring board respectively |
-
1993
- 1993-10-21 JP JP5263529A patent/JP2941617B2/en not_active Expired - Lifetime
-
1994
- 1994-10-18 EP EP94402341A patent/EP0650319B1/en not_active Expired - Lifetime
- 1994-10-18 DE DE69404943T patent/DE69404943T2/en not_active Expired - Fee Related
- 1994-10-19 US US08/326,081 patent/US5646681A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2169422A (en) * | 1984-12-26 | 1986-07-09 | Tdk Corp | An electronic component mounting system |
EP0341944A2 (en) * | 1988-05-10 | 1989-11-15 | Gec Plessey Telecommunications Limited | Improvements in or relating to methods of and apparatus for registration |
US5212881A (en) * | 1990-09-20 | 1993-05-25 | Tokico Ltd. | Electronic component mounting apparatus |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997039613A1 (en) * | 1996-04-18 | 1997-10-23 | Matsushita Electric Industrial Co., Ltd. | Mounting electronic component method and apparatus |
US6584683B2 (en) | 1996-04-18 | 2003-07-01 | Matsushita Electric Industrial Co., Ltd. | Mounting electronic component method and apparatus |
EP0970782A3 (en) * | 1998-07-10 | 2001-11-14 | SANYO ELECTRIC Co., Ltd. | Component suction site-teaching system and method |
US6374146B1 (en) | 1998-07-10 | 2002-04-16 | Sanyo Electric Co., Ltd. | Component suction site-teaching system and method |
US6954681B2 (en) | 2000-12-15 | 2005-10-11 | Cyberoptics Corporation | Board align image acquisition device with improved interface |
US7190393B2 (en) | 2000-12-15 | 2007-03-13 | Cyberoptics Corporation | Camera with improved illuminator |
CN1322800C (en) * | 2003-05-30 | 2007-06-20 | 株式会社查纳位资讯情报 | Substrate information creating method and substrate information creating device |
CN115843174A (en) * | 2023-02-17 | 2023-03-24 | 合肥安迅精密技术有限公司 | Method, system and medium for controlling button enabling of chip mounter based on event driving |
CN115843174B (en) * | 2023-02-17 | 2023-06-16 | 合肥安迅精密技术有限公司 | Event-driven-based chip mounter button enabling control method, system and medium |
Also Published As
Publication number | Publication date |
---|---|
EP0650319B1 (en) | 1997-08-13 |
DE69404943D1 (en) | 1997-09-18 |
JPH07122900A (en) | 1995-05-12 |
US5646681A (en) | 1997-07-08 |
JP2941617B2 (en) | 1999-08-25 |
DE69404943T2 (en) | 1997-12-11 |
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